Stave-jointing machine



(Ho Model.)

H. D. BARNES.

STAVE JOINTING MACHINE. I No. 320,747. Patented June 23,1885.

wen/m4 N. PETERS, Pholm -MWI'IpMr. Walhingim. D. (1

NiTnn STATES PATENT OFFICE.

HENRY D. BARNES, OF NEW HAVEN, CONNECTICUT.

STAVE-JOINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 320,747, dated June 23, 1885.

Application filedMay 4, 1385. (N0 model.)

To aZZ whom it may concern:

Be it known that I, HENRY D. BARNES, of New Haven, in the county of New Haven and State of Connecticut, have invented new Improvements in Machines for Jointing Staves; and I do hereby declare the following, when taken in connection with accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent in Figure 1, a side view, parts broken away; Fig. 2, a top view; Fig. 3, a transverse section showing a side view of the saw with the jack in its raised position over the saw; Fig. 4, a vertical section through the support of one of the pivots, b,- Fig. 5, a side view of thejack, illustrating its operation.

This invention relates to a machine for cut ting the edge of staves which have been previously dressed, to give to them the requisite concavity upon the inside and convexity upon the outside, the machine being specially adapted to small worksuch as oyster-kegs and the like, but applicable to larger kegs, or barrels. It is necessary that the edges of the staves shall be cut in a plane radial to the axis of the keg, and to do this perfectly the 0 jointing must be done while the stave is bent into the shape that it will occupy when in the keg complete.

The object of the invention is the construction of a machine which shall be simple and cheap, easily worked, and to employ but a single saw, and that upon a fixed or inadjustable axis; and the invention consists in the construction of the machine, as hereinafter described, and more particularly recited in the claims.

A represents the frame of the machine-which supports the operative mechanism. It may be made of wood or metal.

B is the sawarbor, arranged transversely across the frame in bearings G, and so as to revolve freely therein. The arbor carries the saw D, which is a common circular saw, but should be supported so as to prevent lateral vibration of the saw-plate; and, as here represented,this is done by applying flanged collars E, one upon each side.

At one end of the frame the jack which is to carry the stave is hung upon a pivot, a, the pivot being in the central plane of the saw. The jack consists of a bar, F, hung at one end to the said pivot, and at the opposite end upon a like pivot, b, in a vertical slide, G. The slide G extends down through the frame, and guided thereby in a vertical plane, as seen in Figs. land a. The two pivots a b are in a line parallel with the bar F. Upon the upper surface of the bar a block, (1, is arranged, distant from the back of the bar according to the curve or bilge to be given to the stave. c is a stop in rear of the block (2, against which one end of lhe stave may rest.

To the back of the bar F, and in rear of the stop 6, a lever, H, is hung upon a fulcrum, f, the lever extending to theforward end of the machine, there terminating in a handle, I. In the lever H, in rear of the block (I, a dog. g, is arranged, extending toward the bar F, and forward of the block is a like dog, it. (See Fig. 5.) The lever H and its dogs are for the purpose of bending the stave. (See Fig. 5.) The leveris first raised, then the stave a set with one end against the stop 6, extending forward over the block (I, and so that as the lever H is again brought down the two dogs 9 h will strike the stave at points each side of the block (I, and so as to bend the stave into the required shape to give the bilge of the barrel, as seen in Fig. 5. hen the lever is down to its close position, it is caught by a spring-latch, Z, which passes up through a corresponding hole in the lever. v

The spring for the latch is produced by a spindle, m, on the back of thelever H, around which isa spiral spring, a, one end supported against a stationary bearing, 0, on the back of the lever, the other end against a pin, 0', through the spindle, the tendency of the spring being to force the spindle against the back of the latch, but so that the spring will yield as the latch is pressed rearward, as indicated in broken lines, Fig. 1, so as to escape the engagement with the lever, or force it into engagement with the lever when it is brought down to place.

The two stops 9 h are made adjustable by screw and nuts, as seen in Fig. 1, so that they may be forced farther from or drawn toward the lever H, to adapt them to varying thickness of staves.

The block (1 may be interchangeable or adjustable to adapt it to different bilge.

The hearing for the stave on the bar F is distant from the line of the pivots a b equal to the radius of the barrel or keg for which the stave is adapted. In order to permit the jointing of staves for various diameters of kegs, the bar F is made adjustable with relation to the pivots a b by means of nuts 8, which secure them to the arms through which the pivots pass. The pivots a 1) permit the jack to swing to the right or left of the saw, as indicated in broken lines, Figs. 3 and 4. The jack is also arranged to swing in a vertical plane, as from the position seen in broken lines, Fig. 1, to that in full lines, same figure, and return. In order to permit this, thehead in which the pivot to is arranged is hung upon a pivot, 15, at the rear of the frame, at right angles to the axis of the pivot a. At the forward end the slide G, which carries the pivot 1), moves up and down with the jack to support that end. The jack therefore has a transverse swinging movement over the saw, or toward and from either side, and also a movement in a vertical plane.

To support the jack in its up position, a trip or pedal,L, is hung to the frame, as at a, one end extending up so as to pass under the slide G when the jack is in its up position, as seen in Fig. 1, but so that the operator may place his foot against the pedal and turn it away from its supporting position, as indicated in broken lines, Fig. 1. Then the jack is free to return.

As the jack must necessarily pass over the saw, it is necessary, or desirable, at least, to prevent its possible contact with the teeth of the saw. To do this, I arrange a rest, M, at the rear and forward of the pivot a in the central plane of the saw, and so that when the jack is raised and over the saw the rest M will pre vent its possible contact with the teeth of the saw. In that position the jack may be supported; but the rest being in a fixed position and in the plane of the saw it is impossible to bring the jack down in that central position, or when it stands over the saw.

The rest may be made adjustable, as seen in Fig. 1, to adapt it to various diameters of saw, if desirable.

The operation of the machine is as follows: The workman raises the jack, as seen in Fig. 1, and supports it upon the pedal L, then releases the lever H, and raises it from the bar F, as seen in Fig. 5, then taking the stave, which has been properly dressed, places one end against the stop E and holds it in its proper longitudinal plane, then brings the leverH downward until the dogs 9 7L come to a bearing thereon and bend the stave into the required shape, at which time the latch Z engages the lever. The stave is now ready for jointing. The jack is turned to one side of the sawsay,the right-as indicated in broken lines, Fig. 3, and brought down, as also shown in broken lines, Fig. 3, taking the'stave down below the cuttingedge of the saw, the saw cutting that edge of the stave accordingly. This done, the jack is raised and turned to the opposite side, when the opposite edge of the stave is dressed. Then the jack is raised to its position of rest as before, the jointed stave removed, and a second stave introduced to be jointed, and so on.

To prevent the jack from being turned too far to the right or left, the spindle w,which is hung upon the pivot b, is constructed With a transverse foot, N which rests in the head 1? of the slide G. (See Fig. 4.) The underside of this foot isinclined upward from the center to the right and left, and so that when turned to the extreme left, as indicated in broken lines, Fig. 4, the incline on that side will come to a bearing in the head B, or to the opposite side the incline on that side will come to its bearing, as indicated in broken lines same figure.

The block d may be a simple short block, as shown in Fig. 1, to support the stave at the center so that it may be bent over, the block, or it may be curved to correspond to the curve of the stave.

The foot N may be applied to either of the connections between the pivot and the lever, or both, so as to limit the transverse swinging movement of the jack.

I claim- 1. The combination of a circular saw, a jack hung upon pivots at right angles to the axis of and in the plane of the saw, and whereby said jack is adapted to be turned to either side of the saw, the said jack also hung upon a pivot parallel with the axis of the saw, whereby it is adapted to be moved up and down in a vertical plane, the said jack consisting of the bar F, adapted to receive the stave to be jointed, and the lever H, hung upon the upper side of the bar F, and provided with dogs adapted to bear upon the stave and give to it its proper curvature on the said bar F, substantially as described.

2. The combination of the circular saw D, bar F, hung upon the pivots a b in the central plane of the saw, the said pivot a being in a support hung upon a pivot, t, the axis of which is at right angles to the pivot a, the other pivot, Z), in a vertical slide, G, the said bar F provided with a stop, 6, and a block, d, upon its back, the lever H, hung in rear of said stop and extending forward, dogs 9 h in said stop, the one in rear and the other forward of said block (I, and a spring-latch, Z, adapted to engage said lever in its set position, substantially as described.

3. The combination of the circular saw D, bar F, hung upon pivots a b in the central plane of the saw, the one of said pivots,a, being in a support hung upon a pivot, t, at right angles to the axis of the pivot a, the said bar provided with a block, d, upon its back, the

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lever H, hung in rear of said block and extending forward, the dogs gh in said lever, one at the rear and the other in front of said block, a latch Z, adapted to engage said lever in its set position, and a stop, M, adapted to support the bar F in its raised position over the saw, substantially as described.

4:. The combination of the circular saw D, the bar F, hung upon pivots a b the line of axis of which is in the central plane of the saw, the one of said pivots, a, being in a sup port hung upon a pivot, t, the axis of which is at right angles to the axis of the pivot a, the pivot I) supported in a vertical slide, G, the said bar having a block, cl, upon its back, the lever H, hung to said bar F, in rear of said block and extending forward, dogs 9 h in said lever, the one in rear and the other in front of said block, spring-latch Z, adapted to engage said lever when in its set position, and the pedal L, arranged to support the said slide G in its up position, substantially as described.

5. The combination of the circular saw D, the bar F, hung upon pivots a b, the axis of said pivots being in the central plane of the saw, the said bar made adjustable with relation to the pivots, whereby it may be set to a greater or less distance from the pivots, the

bar provided with a block, (2, upon its back, the lever H, hung upon a pivot in rear of said block and extending forward, the dogs 9 h, the one in rear and the other in front of said block, said dogs made adjustable with relation to said lever, and a SPIlllg-liLtCh, Z, adapted to engage said lever when in its position, substantially as described.

6. The combination of the circular saw D, the bar F, hung upon pivots a b, the axis of said pivots being in the central plane of the saw, the connection between the bar and one of the pivots being a spindle, w, constructed with the foot N, through which foot the pivots extend, the said foot inclined upon its under side from the center upward to the right and left, and a bearing beneath upon which said inclined surfaces may strike, the bar constructed with a block, d, upon its back, the

lever H, hung upon the back of said bar in rear of the block and extending forward, the stops 1 h, the one in rear of and the other in front of said block, and a spring-latch adapted to engage said lever when in its set position, substantially as described.

HENRY D. BARNES. Witnesses:

JOHN E. EARLE, Jos. O. EARLE. 

